Improvement in driving belts and bands



EI. G. IVSAACS. Driving Belts and Bands.

Patented Sept. 21,1875.

f/fimeaam I v 1 N, PETERS. PNUTD-LITHOGRAPH NITED STATES PATENT OEEIoERNEST e. ISAAOS, OF KINGSTONQJAMAIOA, BRITI H WEST LNDIES.

IMPROVEMENT IN DRIVING BELTS AND BANDS.

Specification forming part of Letters Patent No. 167,838, datedSeptember 21, 1875; application filed I July 14, 1875.

To all whom it mag concern:

Be it known that I, ERNEST GEORGE ISAACS, of the city and parish ofKingston, Jamaica, British West Indies, have invented certain new anduseful Improvements in Driving Belts and Bands; and I do hereby declarethatthe following is a full, clear, and exact description thereof, whichwill enable others skilled in the art to which it pertains to make anduse the same, reference being had to the accompanying drawing, and tothe letters of reference marked thereon, which form a part of thisspecification.

My invention relates to an improved elastic self-adjustin g driving beltor band, the nature of which will be fully explained by reference to thedrawings.

Figure 1 represents an elevation of portions of a circular belt or band,the ends of which are connected together according to-this invention.Fig. 2 is a similar view of. one end of a circular belt or band with theattachment connected thereto in position to be attached to the other endthereof. Figs. 3 and 4 are sectional views of parts, and Fig. 5 is anend view of the connector separately. Fig. 6 represents an elevation,and Figs. 7 and 8 detail views, of portion of a flat belt or bandconstructed according to this invention.

In each of the views similar letters of reference are employed toindicate corresponding parts wherever they occur.

A A represent the two opposite ends ofa belt or band, the extremities aa of which are, by preference, formed with caps or ferrules a a throughwhich and the extremities a a are formed holes o for the passage of theends of springs B. The sprin gs B, in Figs. 1 to 5, are formed round,and are shown applied to circular belts or bands A. The round springs Bare, by preference, formed of highly-tempered steel wire, by anysuitable apparatus, and before application to the bands are left, withthe extremities b of the wire forming the spring, extending in adirection parallel with, or nearly so, to the axis of the spring B,'asshown at Fig. 2. The extremities b, from the point b to about the pointb are then softened, so as to be capable of being readily bent afterbeing passed through a hole, a into the form of a loop or hook, as shownby Figs. 1 and 3. The cap or coverings a are, by preference, formed ofthin metal, and they have constructed on each side grooves or channels afor the re ception of the ends b of the wires B, so that when the beltis in use the ends I) may lie within or on a level with the line of theexterior or periphery of the belt A. In Figs. 6, 7, and 8 I haverepresented my invention applied to fiat belts or bands A. In this casethe springs B are also formed of corresponding section, and are, bypreference, constructed of two or more wires or strips bent or formed sothat their coils shall lie alternately one beside the other throughoutthe length of the spring. in this case the caps or coverings at areshown formed of flat metal turned over the ends a of the belt A, andconnected thereto by rivets a. They may, however, be made to embrace allfour sides of the ends a, and be otherwise connected thereto. The ends bof the wires forming the spring B, as shown by Figs. 6, 7, and 8, arepassed through opposite sides of the belt A, as shown at b and areturned or bent down into the leather or material, as shown at b The flatbelt fastener or connector, shown by Figs. 6, 7, and 8, is made in thefollowing manner: Take, say, for forming a connector for a driving-beltone foot wide and threefourths inch thick, steel wire of the thickness,say, three-sixteenths of an inch, which is then rolled on a plate justsufficiently less'in diameter than the belt itself that the spring shallbe exactly the same width and depth externally as the belt. When steelwire is used it should be softened by passing it through a charcoal orother fire, in order that each coil may lie flat and close to the plateonto which it is rolled, and also to enable the spring toretain itsshape when removed from the rolling plate. It is afterward retempered inthe usual way.

In place of forming the springs B of wire, they may be formed of thinstrips of steel or of india-rubber or other suitable material.

By thus constructing belts or'bands with springs B interposed betweenthe ends thereof, as described, constant tension, uniformity of motion,simplicity of application, as well as the saving of wear and tear of thebands and machinery, are obtained.

Having thus described my invention, Iwould. have it understood that Ilay no claim, separately, to the spring B; nor do I claim a round beltunited at the ends by means of a; helical spring, the ends of whicharescrewed into the helical spring in the manner described and set forthin the specification of Letters'Patent" granted to James Hare, datedMarch 30, 1875, and numbered 161,508; but What I do claim and desire tosecure by Letters Patent, is-- 1. A driving belt or band, A, the ends aof which are provided with caps or ferrules a holes a and groovesorchannels a and com nected together by means of a spring, B, in-

terposed between (and having its periphery.

or sides in a continuous line with the periphcry or sides of the belt orband and connected to)"the ends a by means of 'extensionsbpassingthrough-the holes or eyes a, andres'ting "my own I affix mysignature in presence of two witnesses.

' ERNEST G; ISAAGS.

Witnesses: i

Tnos. J. MYERS,

OOLBORNE BROOKESv

